I am writing a driver for Hdf5 and was looking at the existing VFDs. I wrote some test programs to learn more about their internal working. So not writing any performance critical stuff.
On May 25, 2012, at 1:52 PM, Mohamad Chaarawi wrote: > Rob is definitely correct.. The question that I should have asked also in the > previous email: > Is there a reason why you are using the mpiposix VFD and not the mpiio VFD? > > Mohamad > > On 5/25/2012 11:09 AM, Rob Latham wrote: >> On Fri, May 25, 2012 at 09:41:57AM -0500, Mohamad Chaarawi wrote: >>> Probably what you want is create n datasets, and have each process >>> write to each dataset? >> I guess this is MPIPOSIX, so nothing clever can happen? >> >>> or create 1 4xn, or nx4 dataset and have each process select a >>> portion of the dataset to write and read from? >> If you use MPIIO, doing things this way gets you a lot of >> optimizations. I imagine one day you'll want to scale up beyond 4 >> processors.. >> > > > _______________________________________________ > Hdf-forum is for HDF software users discussion. > [email protected] > http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org _______________________________________________ Hdf-forum is for HDF software users discussion. [email protected] http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org
